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authorDavid Kaspar [Dee'Kej] <dkaspar@redhat.com>2016-11-01 10:38:43 +0100
committerLukáš Nykrýn <lnykryn@redhat.com>2016-11-01 16:15:18 +0100
commiteb1a9ae171f8be0137c146b9dfb3906f90d5a8be (patch)
tree7b19060ceef8615f5987a06477f7fbd002d12397 /sysconfig/network-scripts
parent15eaf7ece1a72fd634550f7278575051f2a25079 (diff)
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ipv6_wait_tentative(): exit immediately when dadfailed occurs
Diffstat (limited to 'sysconfig/network-scripts')
-rw-r--r--sysconfig/network-scripts/network-functions-ipv625
1 files changed, 22 insertions, 3 deletions
diff --git a/sysconfig/network-scripts/network-functions-ipv6 b/sysconfig/network-scripts/network-functions-ipv6
index 2017e273..4fe75e7a 100644
--- a/sysconfig/network-scripts/network-functions-ipv6
+++ b/sysconfig/network-scripts/network-functions-ipv6
@@ -1048,6 +1048,7 @@ ipv6_wait_tentative() {
local fn="ipv6_wait_tentative"
local device=$1
local countdown=30
+ local ip_output=""
if [ -z "$device" ]; then
net_log $"Missing parameter 'device' (arg 1)" err $fn
@@ -1056,10 +1057,28 @@ ipv6_wait_tentative() {
[ "$device" = lo ] && return 0
- while [ ${countdown} -gt 0 -a -n "$(ip -6 addr show dev ${device} scope global tentative)" ]; do
- net_log $"Waiting for interface ${device} IPv6 address(es) to leave the \"tentative\" state" info $fn
- countdown=$(($countdown - 1))
+ while [ ${countdown} -gt 0 ]; do
+ ip_output="$(ip -6 addr show dev ${device} scope global tentative)"
+
+ if [ -z "$ip_output" ]; then
+ return 0;
+ elif echo "$ip_output" | grep "dadfailed" > /dev/null; then
+ net_log $"Duplicate Address Detection: Duplicate addresses detected" err $fn
+ net_log $"Duplicate Address Detection: Please, fix your network configuration" err $fn
+ return 1
+ fi
+
+ net_log $"Waiting for interface ${device} IPv6 address(es) to leave the 'tentative' state" info $fn
sleep 1
+ countdown=$(($countdown - 1))
done
+
+ ip_output="$(ip -6 addr show dev ${device} scope global tentative)"
+
+ if [ -n "$ip_output" ]; then
+ net_log $"Some IPv6 address(es) of ${device} remain still in 'tentative' state" warning $fn
+ net_log $"Run 'ip -6 addr show dev ${device} scope global tentative' to see more" warning $fn
+ fi
+
return 0
}